GB516621A - Improvements in electron-multipliers - Google Patents

Improvements in electron-multipliers

Info

Publication number
GB516621A
GB516621A GB16611/38A GB1661138A GB516621A GB 516621 A GB516621 A GB 516621A GB 16611/38 A GB16611/38 A GB 16611/38A GB 1661138 A GB1661138 A GB 1661138A GB 516621 A GB516621 A GB 516621A
Authority
GB
United Kingdom
Prior art keywords
electrode
electrodes
openings
electron
stream
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB16611/38A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to BE434648D priority Critical patent/BE434648A/xx
Application filed by Individual filed Critical Individual
Priority to GB16611/38A priority patent/GB516621A/en
Priority to GB31096/39A priority patent/GB516664A/en
Priority to FR855159D priority patent/FR855159A/en
Priority to US276883A priority patent/US2254128A/en
Publication of GB516621A publication Critical patent/GB516621A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
    • H01J43/04—Electron multipliers
    • H01J43/06—Electrode arrangements
    • H01J43/18—Electrode arrangements using essentially more than one dynode
    • H01J43/22—Dynodes consisting of electron-permeable material, e.g. foil, grid, tube, venetian blind

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Measurement Of Radiation (AREA)

Abstract

516,621. Electron multipliers. BOSCH, F. J. G. VAN DEN. June 2, 1938, No. 16611. [Class 39 (i)] In an electron multiplier with a series of emission surfaces through which the electron stream passes these surfaces are formed by perforated plates the openings in which diminish in cross-section in the direction of the stream. The openings may be made by punching up the surface of the plate into a conical form, the cross section of the hole at exit being 3/5 that at entry. The wider ends may form 15 per cent. of the surface of the electrode. The arrangement shown comprises cathode 10 surrounded by an electrode 11, accelerating and control grids 12, 13 and a reflecting electrode 14 which diverts the stream through the multiplying electrodes 15-18. The holes in one of the electrodes 15-18 are preferably staggered with respect to those in the succeeding electrode. A collecting grid electrode 23 and final emission plate electrode 24 are provided. Each of the multiplying electrodes is surrounded by a flange 21 extending beyond the next electrode to focus the electrons on to the next electrode as described in Specification 516,664. These flanges may carry devices for heating the electrodes. The connections to the several electrodes are preferably spaced apart round the circumference. The openings, instead of being conical, may be in the form of long slits with turned-back edges.
GB16611/38A 1938-06-02 1938-06-02 Improvements in electron-multipliers Expired GB516621A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE434648D BE434648A (en) 1938-06-02
GB16611/38A GB516621A (en) 1938-06-02 1938-06-02 Improvements in electron-multipliers
GB31096/39A GB516664A (en) 1938-06-02 1938-06-02 Improvements in electron-multipliers
FR855159D FR855159A (en) 1938-06-02 1939-05-23 Electron multiplier
US276883A US2254128A (en) 1938-06-02 1939-06-01 Electron multiplier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB16611/38A GB516621A (en) 1938-06-02 1938-06-02 Improvements in electron-multipliers

Publications (1)

Publication Number Publication Date
GB516621A true GB516621A (en) 1940-01-08

Family

ID=10080452

Family Applications (2)

Application Number Title Priority Date Filing Date
GB31096/39A Expired GB516664A (en) 1938-06-02 1938-06-02 Improvements in electron-multipliers
GB16611/38A Expired GB516621A (en) 1938-06-02 1938-06-02 Improvements in electron-multipliers

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB31096/39A Expired GB516664A (en) 1938-06-02 1938-06-02 Improvements in electron-multipliers

Country Status (4)

Country Link
US (1) US2254128A (en)
BE (1) BE434648A (en)
FR (1) FR855159A (en)
GB (2) GB516664A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1274248B (en) * 1965-06-22 1968-08-01 William H Johnston Lab Inc Device for multi-stage electron multiplication

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2454652A (en) * 1943-06-26 1948-11-23 Rca Corp Cathode-ray storage tube
US2443547A (en) * 1945-08-21 1948-06-15 Rca Corp Dynode
US2674661A (en) * 1948-08-12 1954-04-06 Rca Corp Electron multiplier device
US2782334A (en) * 1952-03-10 1957-02-19 Raytheon Mfg Co Velocity modulated electron discharge devices
US2875372A (en) * 1953-03-30 1959-02-24 Itt Information location circuit
BE538686A (en) * 1954-06-04
US3182221A (en) * 1963-07-22 1965-05-04 Jr Edmund W Poor Secondary emission multiplier structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1274248B (en) * 1965-06-22 1968-08-01 William H Johnston Lab Inc Device for multi-stage electron multiplication

Also Published As

Publication number Publication date
US2254128A (en) 1941-08-26
GB516664A (en) 1940-01-08
BE434648A (en)
FR855159A (en) 1940-05-04

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